Cheapest return flights from Washington to London in May from $672

AirHint found the following cheapest return flights from Washington (DCA) to London (LGW) in May 2026 (see full year).

Return flights

13 May - 26 May British Airways
18 May - 26 May British Airways
20 May - 03 Jun British Airways
01 May - 10 May British Airways
09 May - 17 May British Airways
13 May - 20 May Icelandair
19 May - 24 May British Airways
17 May - 31 May British Airways
08 May - 17 May British Airways
18 May - 25 May Icelandair
17 May - 25 May Icelandair
31 May - 10 Jun British Airways
25 May - 08 Jun British Airways
22 May - 06 Jun jetBlue
29 May - 22 Jun Air Canada

Also check the deals for one-way flights from Washington to London in May.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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